Store listbox value in a variable

[#1]

Hi,

I need to store a value which is selected in listbox in a variable.

If i clear that listbox also, the value in a variable should not be cleared.

if i select some value, then it should update in that variable.

how we can achieve this?

[#2]

I need it without the use of Macro.

[Gysbert_Wassenaar]

You can add a Set Variable action to the OnSelect field trigger and use the getselectedcount() function to check that only one value is selected. See attached example.